The problem

Space Exploration sets all five per-effect quality multipliers of every module (speed, efficiency, productivity and quality) to 0.
A higher quality module therefore has exactly the same effects as a normal one.

The fix

Those overrides are removed, so the base game's default rules apply again: the beneficial effects of a module scale with its quality.

• No new items, recipes or entities.
• Safe to add to an existing save.

Notes

• Balance: a legendary module is 2.5 times stronger than a normal one, which Space Exploration's design does not account for.

yes, the thumbnail is AI generated :)